What is the difference between an Only representative and a 3rd Party representative?

Only Representative; who manufactures a substance other than Turkey, prepares a mixture of the natural or legal person producing or goods, it is built in a natural or legal person appointed by Turkey to fulfill its obligations under KKDİK importer by mutual agreement.

Third-Party Representative; A manufacturer in Turkey, importer, or where relevant downstream user assigns Regulation to fulfill their obligations concerning the sharing of data and joint submission of testing costs, natural or legal persons resident in Turkey

Only representative;
(1)A natural or legal person established outside Turkey who manufactures a substance on its own, in mixtures or in articles, formulates a mixture or produces an article that is imported into Turkey may by mutual agreement appoint a natural or legal person established in Turkey to fulfill, as his only representative, the obligations on importers under the scope of this Bylaw. Only representative shall also comply with all obligations of importers under this Regulation.
(2) The representative shall have a sufficient background in the practical handling of substances and the information related to them and, without prejudice to Article 32, shall keep available and up-to-date information on quantities imported and customers sold to, as well as information on the supply of the latest update of the safety data sheet, referred to in Article 27.
(3) If a representative is appointed in accordance with paragraphs 1 and 2, the non-resident manufacturer in Turkey shall inform the importer(s) within the same supply chain of the appointment. These importers shall be regarded as downstream users for the purposes of this Bylaw.